1231933923 has 12 divisors (see below), whose sum is σ = 1941229368. Its totient is φ = 746626560.

The previous prime is 1231933921. The next prime is 1231933933. The reversal of 1231933923 is 3293391321.

It is a happy number.

1231933923 is a `hidden beast` number, since 1 + 2 + 319 + 339 + 2 + 3 = 666.

It is not a de Polignac number, because 1231933923 - 2¹ = 1231933921 is a prime.

It is a super-2 number, since 2×1231933923² = 3035322381276339858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231933921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6221790 + ... + 6221987.

It is an arithmetic number, because the mean of its divisors is an integer number (161769114).

Almost surely, 2^1231933923 is an apocalyptic number.

1231933923 is a deficient number, since it is larger than the sum of its proper divisors (709295445).

1231933923 is a wasteful number, since it uses less digits than its factorization.

1231933923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443794 (or 12443791 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 1231933923 is about 35098.9162653208. The cubic root of 1231933923 is about 1072.0025162723.

The spelling of 1231933923 in words is "one billion, two hundred thirty-one million, nine hundred thirty-three thousand, nine hundred twenty-three".